If you're a founder: don't hardwire your workflow to a closed assistant. You'll discover the lock on month six, when migration is painful.
If you're an indie hacker: "personal AI" is your wedge. People are tired of being the product. A self-hosted, model-agnostic setup is a genuine talking point.
If you're a normal user: the question isn't "which AI should I pick?" It's "does this tool leave me a door, or wall me in?"